JPH0423236Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to the packaging of photosensitive strips such as rolled photographic paper and photographic film.
More specifically, the present invention relates to a light-shielding container provided with a telescope at the photosensitive strip outlet as described above for loading under sunlight or room lighting.

Various shapes of light-shielding containers for strip-shaped photographic light-sensitive materials have been proposed, such as those disclosed in JP-A-54-36924, JP-A-55-113543, and JP-A-Sho 55-.
Publication No. 124140, Japanese Patent Publication No. 57-128333, Japanese Patent Publication No.
Publication No. 57-190948, Publication No. 1987-87525, Publication No. 88980, Publication No. 113543 of Utility Model Publication,
It is disclosed in Utility Model Publication No. 46-20539 and Utility Model Publication No. 55-31549.

Japanese Utility Model Application Publication No. 55-113543 discloses the following as a package for a band-shaped photographic light-sensitive material, which protects the band-shaped photosensitive material wound into a roll from light and can be easily loaded into an apparatus under indoor lighting. The following are proposed.

namely, a roll of photosensitive strip wound into a roll of increasing radius and having a generally flat end face, and a cover for each end face of the roll, each part cover extending around the periphery of the roll and having a generally flat end face. The packaging is characterized in that it has a fixed rim, which rim ends in such a way that it does not reach the end face of the roll.

[Problem that the invention attempts to solve]

The above-mentioned device has a sufficient function in terms of protecting the strip-shaped photosensitive material wound into a roll from light during transportation, but it has problems in terms of suitability for use, packaging suitability, packaging material cost, and the ability to pull out from the slit opening. There were disadvantages such as scratches on the surface of the photosensitive material when the photosensitive material was passed through the photosensitive material.

A light-shielding member is provided at the part of the light-shielding container for strip-shaped photographic light-sensitive material from which the strip-shaped photographic light-sensitive material is pulled out for the purpose of preventing light from entering the light-shielding container and exposing the strip-shaped photographic light-sensitive material inside the container. . When this light-shielding member is cloth, it is called terempu cloth.

This terempu cloth is generally colored black or the like in order to have the above-mentioned light-shielding function, but in addition to its light-shielding function, it also protects the strip of photographic material from scratches when it is pulled out or rewound. It is necessary to have flexibility so that it does not stick, and it is also essential to take measures to prevent lint, etc. from adhering to the surface of the strip-shaped photographic light-sensitive material (referred to as hair shedding or pile shedding in the photographic light-sensitive material manufacturing industry) and causing failure. It is.

Utility Model Publication No. 46-20539 discloses a film container in which a terem cloth made by knitting a coreless pile yarn obtained by crimping a flexible raw yarn such as viscose or acetate on a base cloth is provided at the film outlet. On the other hand, Japanese Patent Application Laid-Open No. 54-36924 proposes a light-shielding container (generally referred to as a cartridge container) for a 135-type roll film provided with a terem cloth having an electrostatic flocking structure. Further, Japanese Patent Application Laid-Open No. 57-190948 proposes a light-shielding container using a light-shielding member directly flocked to a thermoplastic material at a roll film outlet.

However, in the case of velvet weave or velvet weave, which is made by weaving pile threads into the fabric, so-called terempu cloth has a woven structure, and the process of making terempu cloth tends to fray and pull out the pile, making the production process complicated. When the photographic strip is assembled into a light-shielding container for photographic light-sensitive material, which increases the production cost, and when the photographic strip is pulled out or rolled up, friction with the surface of the photographic strip may cause fraying or shedding of the pile, and the scraps may be removed from the light-shielding container for the photographic strip. It sometimes adhered to the photosensitive film of photosensitive materials and caused problems. In particular, when used in the drawer of a light-shielding container for roll-shaped color photographic paper loaded with indoor light as explained in the example, the photosensitive film using gelatin swells under high temperature and high humidity, increasing its adhesion. Pile adheres, which poses a practical problem.

In addition, in the case of terempu cloth with an electrostatic flocking structure, although the production process is slightly simplified, it has a simple structure in which adhesive is applied to a tricot, etc., and then electro-flocked to fix the pile.Therefore, the pile is not fixed or the pile is weakly fixed. It is impossible to put it into practical use because the pile tends to come loose so much.

A product that is thought to be able to improve these problems is a raised knit (raised knit), which is a raised structure for stockinette (knitted fabrics).

However, in this case as well, in order to solve the problem that the weave point is loose and the attached hair is easy to fall out, we can use high shrinkage yarn as the ground yarn and tighten the stitches by heat treatment, or use an adhesive as shown in Figure 2. For the bristles, it is necessary to use a special thread that becomes bulky through heat treatment so that the tips of the bristles open well. However, since brushed and sheared pile yarn waste is generated, even if brushed knit is used in the drawer of a light-shielding container for rolled photographic paper loaded with indoor light, gelatin must be used under high temperature and high humidity conditions. Since the photoresist film swells and increases its adhesion, pile yarn waste that cannot be removed in the raised portions adheres to the photoresist film, which poses a practical problem.

[Means for solving problems]

The present invention provides a photosensitive strip container that improves the shortcomings of these conventional technologies, and can be produced at a low cost using a simple process, and is free from problems such as shedding and fraying. This is achieved by a photosensitive strip container characterized in that a colored terremp, which is a light-shielding member and which covers the surface of a woven or knitted fabric with a )-shaped pile, is provided at the photosensitive strip outlet.

Hereinafter, the content of the present invention will be explained in more detail with reference to the accompanying drawings. All of the accompanying drawings are partially or completely enlarged to facilitate understanding.

FIG. 6-a is a plan view showing the structure of a woven fabric in principle, and FIG. 6-b is a plan view showing the structure of a knitted fabric in principle.

FIG. 7 is a side sectional view showing the structure of a conventional terempu cloth with a woven structure, in which pile yarn 4 is woven into a ground cloth 1 made by weaving warp yarns 2 and weft yarns 3 as shown in FIG. 6-a. be. In order to create a terempu cloth with such a structure, for example, as described in Utility Model Publication No. 46-20539, weaving is carried out on a plain ground using the ground weft and warp threads 2 and 3, and at the same time, the pile warp threads 4 are tangled and woven. It is common to make double velvet and cut it, but in order to fix the pile yarn 4 to the ground fabric 1, it is impregnated with a filler adhesive 5.

FIG. 8 is a side sectional view showing the structure of a conventional terempu with an electrostatic flocking structure, which is produced by providing an adhesive layer 5 on a container base 6 made of metal or the like, and electrostatically flocking short fibers 7.

FIG. 1 is a side cross-sectional view showing an example of the structure of the telempu used in the present invention, which is made of raised warp knitted stockinette with a loop-shaped pile 14 covering the surface of the knitted fabric. That is, Fig. 6-
A pile 14 is knitted in a loop shape into a knitted fabric 11 formed by knitting warp yarns 12 as shown in b. To create a terempu with such a structure, a knitted fabric is prepared by knitting pile yarns in advance, and the pile yarns are pulled out in a loop by scratching with a needle or brush, and then heat set to form a terempu. Comparing Figures 7 and 8 with Figure 1, in Figure 7 the pile yarn 4 is simply tied to the warp yarn 2, while in Figure 8 the short fibers 7 are flocked. 1, the pile yarns 14 are attached to the warp yarns 12.
It has a structure that revolves around the fibers and is brushed in a loop, so the terempu will not fray or fall out, and the pile threads are continuously integrated, so it can be used even under high temperature and high humidity conditions. No quality deterioration.

FIG. 2 is a side sectional view showing another example of the structure of the telescope used in the present invention, in which the telescope shown in FIG. 1 is impregnated with a filler adhesive 15 to prevent deformation.

Figure 3 is an actual photograph of the invented terempu in which loop-shaped sinker piles are directly formed using a circular knitting machine, and Figure 7 (velvet) and Figure 8 (flocked).
It can be observed that the pile tip is not cut compared to the above.

FIG. 4 is a perspective view showing an example of the structure of the container of the present invention, and shows a state in which a colored telescope 24 having a loop-shaped pile is provided in a drawer opening for color photographic paper 20.

FIG. 5 is a perspective view showing another example of the structure of the container of the present invention, in which a colored telescope 24 having a loop-shaped pile is provided at the outlet for the film 21 of a JIS135 type photographic film cartridge 23. Show the situation.

In this invention, warp yarns, pile yarns, etc. are synthetic fibers made of thermoplastic resin (nylon, acrylic fibers, polyester fibers, vinylon, vinyl chloride fibers, vinyl chloride, vinylidene copolymer fibers, polypropylene fibers, polyethylene fibers, polycarbonate fibers). etc.) can use melt cutting methods such as heat slitting and ultrasonic slitting methods to prevent the cut surface from fraying, and the quality is uniform, has low moisture absorption, and has good heat setting properties after raising. It is preferable because it is superior to natural fibers in various respects such as high physical strength.

However, depending on the required characteristics, synthetic fibers, rayon,
Single fibers such as acetate, cotton, and silk fibers, specially processed fibers, or fibers spun in a mixture of two or more types can be selectively used.

Further, in the present invention, the terempu structure having loop-shaped piles is a pile weave in which loops are woven on one or both sides of the fabric. Usually, it is made with a warp or weft double weave, but when the loops are created using warp threads, it is called warp pile weave, and when the loops are created using weft threads, it is called weft pile weave. The warp (or weft) threads that make the loops are called the warp (or weft), and the warp and weft threads that make up the fabric are called the warp and weft, respectively.

Terempu surface loop (Rina)
One way to create piles of this type is to deeply brush the diagonal weave or satin weave fabric using a napping machine.

Methods for making terempu with a loop-shaped pile from knitted fabrics include terempu, which is made by raising so-called flat knitted stockinette, such as circular knitting or flat knitting, into a loop-shaped pile, tricot knitting, There is a method of making terremp by raising so-called warp knitted stockinette, such as ratssel knit or Milanese knit, into a loop-shaped pile.

Further, as a method for directly producing a knitted fabric having a loop-shaped pile without raising, there are two methods: a method using a circular knitting pile knitting machine and a method using a circular hosiery pile knitting machine.

In the present invention, dyes and pigments are used to color the terremp.The color is not particularly limited as long as it has high density and light-shielding properties, but black is preferable from the viewpoint of light absorption.

Particularly preferred are sinker pile yarn Terempu, which uses black-colored polyester fibers, acrylic fibers, and fibers containing 50% or more of nylon, and is knitted with loop-shaped piles using a circular knitting machine, and a tricot warp knitting machine. This is French pile type terempu, which is made by manufacturing knitted fabric using threads, then hooking the threads running horizontally with a needle and pulling them out into a loop to create a pile.

〔Example〕

Examples will be given below to make the effects of the present invention more clear.

[This invented product]

Using a 75 denier polyester yarn manufactured by Kuraray Co., Ltd. as the ground yarn (warp yarn) and a 75 denier polyester yarn also manufactured by Kuraray Co., Ltd. as the pile yarn, a sinker with a loop-shaped pile was created using a circular knitting machine. A terempu with a pile knitting structure was prepared and used as the terempu material 24 in the drawer section of the color photographic paper 20 of the light-shielding container 22 for photographic paper, which is a color loaded under room lighting as shown in FIG.

The characteristics of Telempu are as follows.

Total thickness: 1.3mm Pile length: 0.91 to 0.99mm The light-shielding property is sufficiently light-resistant even when exposed to light for 30 minutes under an illumination intensity of 80,000 lux using color photographic paper.The pull-out resistance of color photographic paper is also small, and it does not fade at room temperature. There was no scratching or static marks, and even if the color photographic paper was pulled out after being left at a temperature of 40°C and humidity of 80% RH for 12 hours, there was no fraying on the cut surface, loose hair, or contact with the pile lint. No adhesion to the photosensitive film of the color photographic paper was observed.

Comparative example 1 The ground thread is 150 denier rayon thread,
The second layer uses 75 denier rayon yarn as the pile yarn.
A conventional terempu having a side cross-sectional structure as shown in the figure was prepared and used as a terempu material for a color photographic paper drawer portion of a light-shielding container for color photographic paper loaded under room lighting as shown in FIG.

The various properties of the telemp were almost the same as those in the examples, but the photosensitive film of the color photographic paper that was in contact with the telemp showed fraying on the cut surface, hair loss (pile shedding), and pile cutting debris even at room temperature. When the color photographic paper was left at a temperature of 40℃ and a humidity of 80% RH for 12 hours, when the color photographic paper was pulled out, hairs and pile lint were deposited on the entire surface of the color photographic paper's photosensitive film that was in contact with the telescope. It was impossible to change.

Comparative Example 2 A stockinette (knitted fabric) was manufactured using a tricot knitting machine (vertical knitting machine) using ground yarn and pile yarn that were the same as the product of the present invention, and the horizontally running yarn was hooked with a needle to make a loop. After a brushed process to draw out the shape
A terremp with a tricot knit structure having a fuzzy pile was cut by cutting the pile to a pile length of 1.05 mm, and the fourth
It was used as a terremp material for the color photographic paper drawer of the light-shielding container for color photographic paper loaded under room lighting as shown in the figure.

The various characteristics of the telemp were almost the same as those in the example, but when the color photographic paper was pulled out after being left at a temperature of 40°C and humidity of 80% RH for 12 hours, there were several spots on the photosensitive film of the color photographic paper that was in contact with the telemp. The pile was found to be defective due to the adhesion of cut pile debris.

Similar results were obtained when it was used as a terrestrial material for a JIS135 type photographic film cartridge and a terrestrial material for a light-shielding cassette of the type disclosed in Japanese Patent Publication No. 59-36736.

[Effect of idea]

According to the present invention, since the loop-shaped pile is used as it is, it is cheaper than velvet-type terempu that is brushed and cut using the same manufacturing method.
In addition, there is no pile waste generated during the manufacturing process, and there is no fraying or hair loss (pile loss) in the photosensitive film of the strip-shaped photographic light-sensitive material that is in contact with the telescope even under high temperature and high humidity conditions.
There is no adhesion of pile-cutting debris, and the knitted fabric has a loop-shaped pile using yarn made of thermoplastic resin such as nylon or polyester fiber.The manufacturing process includes the slitting process of heat-cutting into the width to be used. Even when used as a terempu material for light-shielding containers, there is no pile waste, fraying, or pile loss, and the knitting speed is several times that of a woven structure, and there is no need for sealing adhesive. Significant cost reductions are possible.

The present invention can be widely applied without being limited to the embodiments, specifications, or drawings.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing an example of the structure of the telescope used in the present invention, and FIG. 2 is a side sectional view showing another structural example of the telescope used in the present invention. FIG. 3 is a photograph in place of a drawing showing the shape of the terempu fiber used in the present invention. FIG. 4 is a perspective view showing a structural example of the container of the present invention, and FIG. 5 is a perspective view showing another structural example of the container of the present invention. FIG. 6 is an enlarged plan view for theoretically comparing a woven structure and a knitted structure, and FIGS. 7 and 8 are side sectional views showing the structure of a conventional telemp. 2, 12... Ground yarn, 4... Fuzzy pile yarn, 14... Looped pile yarn, 5, 15... Sealing adhesive, 20, 21... Photosensitive strip material, 22,
23...Photosensitive strip container, 24...Colored terremp.

Claims (1)

[Scope of utility model registration request] A photosensitive strip container characterized in that a colored terremp having a loop-shaped pile is provided at a photosensitive strip outlet.